[MA] Wrestling with Weapons

[Icelander]

Let's move from generalities to specifics.

Sir Michael Carragher has ST 19, DX 14 and a Talent that affects all of his combat skills at level 2. His Wrestling skill is DX+5 (i.e. 21) and his Two-Handed Sword skill is DX+5 (i.e. 21). He has Armed Grapple (Two-Handed Sword) at 21 and Choke Hold (Two-Handed Sword) at 21. He also has the Power Grappling Perk.

If he wishes to grapple a foe with his claymore, it is clear that he rolls versus his Armed Grapple skill. What happens, however, when he wishes to turn a grappled opponent around so that he is less likely to harm him?

This is Shoving People Around* and requires a roll against ST, DX or best grappling skill, whichever his highest. On the other hand, Sir Michael is not grappling the enemy with his best grappling skill, he is grappling with a technique of weapon skill**.

Due to Sir Michael's Power Grappling Perk, the highest of the three options given above is ST-based Wrestling at 26. But is he allowed to roll against Wrestling when he has a foe grappled with a weapon skill? If not, can Power Grappling affect weapon skills when they are used to grapple?

And what if Sir Michael happened to be using a halberd instead of his trusty claymore? In that case, he only has skill DX+3 (i.e. 19) and does not have Armed Grapple. So he's be rolling at 16 to initiate a grapple, but what does he roll against after that? ST roll with bonus for Power Grappling would be 24 or 22 if the bonus is counted from Polearm. ST-based Wrestling would be 26. ST-based Polearm skill would be 24. ST-based Armed Grapple (Polearm) would be 21.
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On the other hand, if Power Grappling can't affect weapon skills and he is not allowed to use Wrestling when grappling with weapons, he's reduced to rolling straight ST or straight Polearm skill. This is dramatically worse than using just his bare hands (19 vs. 26).

*The same rule would apply for takedowns or shifting grips, as well.
**Which happens to be at the same level, but this is less important than you'd think.